Oil-burner



I PATENTED FEB. 2 1904. I A. W. HESS & A. S. WILLIAMS.

OIL BURNER. APPLICATION FILED MAY 23, 1903.

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No. 751,395. PATENTBD FEB. 2, 1904;

' A. W. HESS 6: A. S. WILLIAMS.

OIL BURNER. Y APPLIOATION mam MAY 23, 1903.

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Patented February 2, 1904.

UNITED STATES PATENT OFF-ICE. I

ALEXANDER W. HESS ANDANDREW S. WILLIAMS, OF SAN JOSE,

CALIFORNIA.

OIL-BURNEB.'

SPECIFICATION forming part of Letters Patent No. 751,395, dated February2, 1904. Application filed May 23, 1.903. Serial No. 168,509. (Nomodel.)

To all whom it may concern:

Be it known that we, ALEXANDER W. HEss and ANDREW S. WILLIAMS, citizensof the United States,,residing at San .Jose, in the county of SantaClara and State of California, have invented new and useful Improvementsin Oil-Burners, of which the following is a specification.

Our invention relates to new and useful improvements in oil-burnersespecially adapted for use in connection with furnaces, &c., and is moreespecially an improvement on that described and claimed in theapplication of Alexander W. Hess, filed December 24, 1902, Serial No.136,485.

An object of the invention is to provide means whereby a mixture of oiland steam, air, or both, may be supplied to a burner of novelconstruction.

A further object is to provide means for heating the air prior .to itsadmission to the mixing apparatus.

A further object is to employ a superheater for the reception of thecombustible mixture immediately prior to the ignition thereof.

A further object is to employ an atomizer or mixer of novel constructionwhereby oil may be thoroughly mixed with either steam orair, or both,.as desired.

With the above and other objects in view the -invention consists in thenovel construction and combination of parts hereinafter more fullydescribed and claimed, and illustrated in the accompanying drawings,showing the preferred form of our invention, and in which.

Figure 1 is a detail view of the mechanism detached. Fig. 2 is an endelevation of the valves and the arms extending from the stems thereof,the quadrant and the operating mechanism being removed. Fig. 3 is a planand edge view of the swinging guide-bar. Fig. 4 is a longitudinalsection through the atomizer or mixer employed in connection with thisapparatus. tion through the superheater. Fig. 6 is a similar viewthrough the air-heater. Fig. 7 is a vertical section through the frontportion of the furnace and showing the positions of the air-heater andthe superheater for the com- I struction.

Fig. 5 is'a longitudinal secconnected to a suitable air-compressor. (Notshown.) A pipe 5 extends from the opposite end of this cylinder 2 andthrough the front of furnace 1, and this pipe opens into one end of anatomizer near which is arranged a pipe 6, which extends from a boiler(not shown) and is adapted to conduct steam to one end of the atomizeror mixer, which is of novel con- A valve 7 is arranged within thepipe5'at a point adjacent the atomizer, and

a similar Valve 8 is arranged within pipe 6 at a point removed from itsjunction with pipe 5. An arm 9, having a series of apertures 10 therein,extends downward from the stem 11 of valve 7 and a similar apertured arm12 is arranged on the stem 13 of valve 8. A notched strip 14 is mountedupon a pin 15, arranged in one of the apertures 10 in arm 9. A notchedstrip 17 is fulcrumed to the arm 12- and is adjustably connectedthereto, and this strip engages a pin 18, which is located at a pointadjacent the upper end of an arm 19. This arm is secured at a pointintermediate its ends to the stem 20 of a valve 21, arranged within anoil-inlet pipe 22. Loosely mounted upon stem 20 is a guide-bar 23, oneend of which is forked and adapted to travel upon a quadrant 24, securedin any suitable manner to the front of the furnace. Pins 25 extend fromopposite sides of the guide-bar, and one of them is adapted to beengaged by a notched strip 26, pivoted to arm 19 near its lower end, anda rod 27 is connected to the other pin and extends upward to abell-crank lever 28, to which is secured a rod29, which extends to asuitable damper-regulator. (Not shown.)

The atomizer or mixer used in connection with this apparatus is shown indetail in Fig. 4. It comprises acasing 30, having an inlet 31 in oneside thereof, in which is arranged the end of the oil-supply pipe 22,and both ends of the casing are internally screw-threaded, and to one'ofthese ends is fastened an outlet-pipe 32, Fig. 2, for conducting thecombustible mixture from the atomizer to a superheater arranged withinthe front end of the fire-box of the furnace and comprising a cylinder33, having an internallyscrewthreaded cap 34 upon one end thereof.Extending from this cap is a tubular extension 35, which opens into aburner preferably formed of a cylindrical cap 36, closed at its outerend and having a desired number of parallel slots 37 in one side thereofto permit the discharge of the combustible mixture therethrough. Withinthe other end of casing 30 of the atomizer is arranged the end ofa'casting 38, having an inlet 39 in one side thereof, in which issecured the air-inlet pipe 5. An inlet 40 is formed at the outer end ofthis casting, and Within this inlet is secured the steam-supply pipe 6.A tube 41 is fastened within the inner end of the casting 38 and extendslongitudinally of the casing 30 at the center thereof, and slots 42 areformed within this tube in a spiral in order that the steam and airadmitted through the inlets 39 and 40 will be evenly distributed withinthe casing 30. A plug 43 is arranged on the free end of the tube 41.

In operation a desired quantity of steam or air, or both, is admitted tothe atomizer by opening either or both the valves 7 and 8, and oil isalso admitted to the atomizer perferably under pressure by swinging thearm 19 toward the guide-strip 23. When the oil-valve 21 has been openedsulficiently to admit adesired proportion of oil to the atomizer, thenotched strip 26 is placed into engagement with its pin 25, and thenotched strips 14 and 17 are also placed into engagement with the pins16 and 18, respectively. The valves are thus locked together, and onecannot be opened or closed without a corresponding movement of theother, and therefore the proportion of oil and steam or air, or both,will remain unchanged until one or the other of the strips 26, 17, and14 is disengaged from its pin and readjusted. By pulling upward upon therod 27 the valves may be opened in unison, thereby increasing thequantity of the combustible mixture supplied to the burner, and thissupply will be diminished or cut off when the guide-strip 23 is swungdownward. By connecting the guide-strip to the damper-regulator theflame can be so controlled as to produce a uniform heat.

\Vhen oil is admitted to the casing 30 of the atomizer, it will bepromptly brought into contact with either or both the air and steamadmitted through the inlets 39 and 40, respectively, because this air orsteam will be forced outward under pressure through the slots 42. Theparts will be thoroughly mixed within the casing 30, and then dischargedthrough the pipe 32 into cylinder 33,- where the heat of the furnacewill superheat the mixture prior to its discharge through slots 37 andits ignition.

By employingvalve mechanism of the character herein described theproportion of oil and steam or air, or both, can be readily regulatedand a practically smokeless flame or perfect combustion produced. Bymeans of the notched strip 26 the guide-strip 23 may be locked in anydesired position in relation to arm 19, and in this way the movement ofsaid strip and arm, and obviously arms 12 and 14, may be increased ordiminished, thereby regulating the amount of mixture supplied to-theburner. If desired, the connections between the valve-operatingmechanism and the damper-regulator may be dispensed with and the valveopened or closed by hand simultaneously.

As it is often desirableto adjust the burner within a furnace so as tokeep the flames from coming in direct contact with boiler, we preferablyemploy an adjusting device, which is shown in detail in Fig. 9. Thisconsists of a lever 44, having an adjusting-screw 45 in its upper end,while its lower end has a clampingblock, 46 adapted to be secured to thelever by means of bolts 47. The pipe 32 is adapted to be clamped betweenthe block 46 and the adjacent end of lever 44, and a suitable collar 48is secured to the pipe 32 near the inner surface of the front of theboiler.

In operation the inner end of the adjustingscrew 45 is in contact withthe outer face of the boiler-front. By turning the screw 45 inwardly theupper end of the lever 44 is pulled outward, thereby raising theburnerlip 36, and vice versa.

In the foregoing description we have shown the preferred form of ourinvention; but we do not limit ourselves thereto, as we are aware thatmodifications may be made therein without departing from the spirit orsacrificing any of the advantages thereof, and we therefore reserve theright to make such changes as fairly fall within the scope of ourinvention.

Having thus described the invention, what is claimed as new isi 1. Inmechanism of the character described, the combination with an atomizerhaving an outlet and a superheater, and a burner connected to saidsuperheater; of steam, air and oil inlets in the atomizer, and a valvein each of said inlets, an arm extending from each of said Valves, anadjustable connection between the arms, whereby the arms may be operatedin unison, a fixed quadrant adapted to engage and guide one end of oneof the arms, a swinging guide-strip adapted to be connected tovalve-operating means and engaging and slidably mounted upon saidquadrant and an adjustable connection between said guidestrip and one ofthe arms of the valves.

2. In mechanism of the character described,

the combination with valved air, oil and steam supply pipes, and meansfor operating the valves in said pipes in unison; of an atomizercomprising a cylinder having an inlet connected to the oil-supply pipeand a casting opening into the cylinder, inlets within the casting forthe reception of the steam and air supply pipes, respectively, a tubesecured Within the casting and extending longitudinally within thecylinder, said tube having spirallyarranged slots, an outlet-pipeextending from the cylinder, a superheatingcylinder connected thereto,and a burner at one end of said superheating-cylinder.

3. In mechanism of the character described, the combination with air,steam and oil supply pipes, valves therein, and means connecting thevalves whereby the same may be opened or closed in unison; of anatomizer comprising a hollow cylinder having an inlet connected to "theoil-supplypipe, a casting secured to the cylinder and having inletstherein, an air-supply pipe opening into one of the inlets, and aheating-cylinder connected to said air-supply pipe, a steam-supply pipeopening into the casting, a spirally-slotted tube secured to the castingand extending Iongitudinally in the cylinder of the atomizer,

said tube being closed at one end, an outlet-pipe extending'from saidcylinder, a superheatingcylinder connected thereto, and a burnercommunicating with the superheating-cylinder and comprising a cap havingslots in one side thereof.

4. In mechanism of the character described, an atomizer comprising ahollow cylinder having an inlet for the reception of ,oil, a castingopening into said cylider, having air and steam inlets, a tube securedwithin the casting and extending longitudinally within the cylinder,said tubehaving a spirally-arranged series of slots and closed at oneend, and an outlet in the cylinder.

In testimony whereof We aflix our signatures WM. B. HARDY, THos. W.HARDY.

